databases/redis_exporter: Update 1.81.0 => 1.83.0

While here, refactor GO_BUILDFLAGS build metadata.

Changelogs:

• https://github.com/oliver006/redis_exporter/releases/tag/v1.82.0
• https://github.com/oliver006/redis_exporter/releases/tag/v1.83.0

Commit log:
https://github.com/oliver006/redis_exporter/compare/v1.81.0...v1.83.0

PR: 293931
Reported by: Volodymyr Kostyrko <arcade@b1t.name> (maintainer)
Approved by: vvd (co-mentor, implicit)